I'd be also interested in that (I also have an AC100, but no time to debug it
yet).

I think Joop has already some image available?

Yes, the image I guess is not really the issue here.

Like Ubuntu, Joop has been using the marvin24s-kernel from gitorious.
This is combined with an initrd into an Android Boot Image that the
native bootloader understands.

Alex would like this to be replaced by a U-Boot that loads kernel and
initrd from an actual partition and that kernel being the standard
Factory kernel with appropriate config. Someone would need to diff a
working ac100 kernel against the corresponding upstream kernel and
forward-port it to 3.2 (or whatever 12.2 uses) and I've been lacking the
time to do so.